P Please find in the below table the proportion of Quebecers who made a donation to specific charities in the past year. charities homeless shelter animal rescue food bank proportion of the population 0.05 0.02 0.31 (a) What is the probability that, in a random sample of 51 people, exactly 5 of them donated to a homeless shelter? (b) What is the probability that, in a random sample of 31 people, at least two of them made a donation to an animal rescue? (c) Calculate the expected value and standard deviation for the number of people in a random sample of 75 people who did not donate to food banks.

P Please find in the below table the proportion of Quebecers who made a donation to specific charities in the past year. charities homeless shelter animal rescue food bank proportion of the population 0.05 0.02 0.31 (a) What is the probability that, in a random sample of 51 people, exactly 5 of them donated to a homeless shelter? (b) What is the probability that, in a random sample of 31 people, at least two of them made a donation to an animal rescue? (c) Calculate the expected value and standard deviation for the number of people in a random sample of 75 people who did not donate to food banks.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

The class I'm taking is statistics! I am completely stuck. Need help. I have attached the problem. Please view attachment before answering. Thank you!
In a hospital, about 3 patients came to the emergency room between 5:00 and 6:00 p.m. The probability that at least one patient came to the emergency room between 5:00 and 6:00 p.m. is ...... Select one: Oa. 0.8009 Ob. 0.9503 Oc. 0.1991 O d. 0.0497 Next pa Previous page
BlueSky Air has the best on-time arrival rate with 77% of its flights arriving on time. A test is conducted by randomly selecting 18 BlueSky Air flights and observing whether they arrive on time. What is the probability that two flights of BlueSky Air arrive late? (Please carry answers to at least six decimal places in intermediate steps. Give your final answer to the nearest three decimal places). Probability (as a proportion)
Every business day, Michael's alarm goes off at 06:30. The probability he hits the snooze button is 20%. a. Give the discrete probability distribution for the event that Michael's alarm does or does not go off on a business day. What type of random variable is this? Explain. b. In 8 business days, what is the probability Michael hits the snooze button at least one time? c. In 80 business days, how many times would we expect Michael to hit the snooze button? What is the associated variance?
The proportion of eligible voters in the next election who will vote for the incumbent is assumed to be 53.9%. What is the probability that in a random sample of 430 voters, less than 49.2% say they will vote for the incumbent?
A local forest contains a population of 10,000 deer. Scientists capture, tag, and release 500 of those deer. What is the probability that 10 of the 100 deer sampled are previously tagged? (Round to four decimal places.)
_______________ is the probability of an outcome on one variable (e.g., survival vs. death) given a score for another variable (e.g., whether the person owns a dog or not), whereas, ____________ is the overall probability of some outcome (such as survival vs. death) for the entire sample, ignoring membership on any other categorical variables.
What is the probability that a randomly selected seedling was damaged by deer? . probability:
hwm7 17 The table summarizes results from 980 pedestrian deaths that were caused by automobile accidents. DriverIntoxicated? Pedestrian Intoxicated? Yes No Yes 50 80 No 219 631 If two different pedestrian deaths are randomly selected, find the probability that they both involved drivers that were intoxicated.Report the answer as a percent rounded to one decimal place accuracy.
Submit your answer as an exact fraction or a decimal rounded to the hundredths place. Cupcakes are being randomly passed out to every student in the class. The assortment of cupcakes is described in the table below. What is the probability of receiving a cupcake that is not vanilla flavored? Cupcake flavor Number of cupcakes Vanilla 7 Mint chocolate 3 Red velvet 4 Carrot Cake 6
Homework Housework Outside Employment Recreation Other Total Male 29 15 20 23 96 Female 18 17 26 39 4 104 Total 47 32 46 62 13 200
What is the probability that a teen does not enjoy an eBook? 0.645 0.419 0.355 0.226